Resources Contact Us Home
Control apparatus of internal combustion engine

Image Number 15 for United States Patent #7284367.

The ignition timing is sustained at an initial value during a predetermined time beginning at a start of an engine, and is retarded after the predetermined time is elapsed to heat a catalyst at an early time. The predetermined time ends when the negative pressure of an intake pipe or the negative pressure of a brake booster reaches to a predetermined value. That is, the predetermined time is a period, which begins at a start of the engine and ends when a proper negative pressure can be sustained in the brake booster. As a result, it is possible to assure a negative pressure in the brake booster at an early time and to reduce exhaust emission at a start of the engine simultaneously.

  Recently Added Patents
Heat stable variants of plant adenosine diphosphate glucose pyrophosphorylase small subunit
Vanadium, cobalt and strontium additives for use in aluminum back solar cell contacts
Integrated advance copper fuse combined with ESD/over-voltage/reverse polarity protection
Method and apparatus for controlling a multi-node process
Mirror drift compensation in an optical circuit switch
Steplessly adjustable cymbal locating device
  Randomly Featured Patents
External blower motor and starting motor for a combustion turbine system
Plastic paneling on metallic door frame
Sequential drawer slide
Migration of data between computers
Touch screen display
Reaction arrestment mixer head and mixing process
Glare susceptibility tester
Method for storing pulse oximetry sensor characteristics
Accessory for adapting cameras to small format photographic film units